CAJ | 학술논문

充填法开采挂帮矿不但可以充分回采矿石，而且可以有效地防止边坡下滑和控制采场围岩变形。以武钢大冶铁矿尖山挂帮矿体采用充填法开采为工程背景，运用 CMS 三维空区探测系统对原有空区进行探测，通过CMS及3D mine-FLAC3D耦合的方法对开采充填过程中采场围岩及露天边坡的应力、位移和塑性变形进行了数值模拟计算分析，提高了数值模拟的可靠程度。计算结果表明，采空区的充填可有效地控制围岩及露天边坡的变形，实现安全开采。在挂帮矿体开采过程中，建立应力、断面收敛及全站仪联合监测网，对采场围岩、矿柱及边坡的位移、应力变化进行实时监测，监测结果与数值模拟计算结果基本一致。
충전법개채괘방광불단가이충분회채광석，이차가이유효지방지변파하활화공제채장위암변형。이무강대야철광첨산괘방광체채용충전법개채위공정배경，운용 CMS 삼유공구탐측계통대원유공구진행탐측，통과CMS급3D mine-FLAC3D우합적방법대개채충전과정중채장위암급로천변파적응력、위이화소성변형진행료수치모의계산분석，제고료수치모의적가고정도。계산결과표명，채공구적충전가유효지공제위암급로천변파적변형，실현안전개채。재괘방광체개채과정중，건립응력、단면수렴급전참의연합감측망，대채장위암、광주급변파적위이、응력변화진행실시감측，감측결과여수치모의계산결과기본일치。
Exploitation of hanging wall ore with filling method can not only recycle ore, but also avoid decline of the slope and control deformation of surrounding rock effectively. Based on the hanging wall ore mining by filling method of Daye Iron Mine, Cavity Monitoring System (CMS) is used in this paper to detect the original goaf of hanging wall ore. Then stress, displacement and plastic deformation of surrounding rock and open-pit slope in the processing of mining the hanging wall ore are analyzed by CMS and 3D mine-FLAC3D coupled method. The calculation results show that the surrounding rock and open-pit slope deformation can be controlled by filling the goaf effectively, so that the hanging wall ore can be mined safely. In the process of mining the hanging wall ore, monitoring network containing stress, fractures convergence and total station is established to monitor real-timely the displacement and stress changes of the surrounding rock, the pillar and the slope. The monitoring results aregenerally in agreement with the numerical simulation.